Single-barrel firearm of the breakdown type



, E. F. FLUES SINGLE BARREL FIREARM OF THE BREAKDOWN TYPE Filed Sept 18, 1919 2 sheets-sheet l W 'IH 'y /l Tmf.

Apr. 3, 1923. I A 1,450,496

E. F. FLUES SINGLE BARREL FIREARM OF THE BREAKDOWN TYPEv Filed-Sept. 18, 1919 2 sheets-sheet 2 /3 lo l, 4

- drf'/ L" improved sighting rib.

Patente-d Apr. 3, 1923..

[miran stares EMIL F.,FLUES, OF BUFFALO, NEW YORK.

SINGLE-BARREL FIREARM OF THE BREAKDOWN TYPE.

Application led September 18, 1919. Serial No. 324,545.

To all whom z't may concern:

Be it known that I, EMIL F. FLUns. a citizen of the United States, residing at Buffalo,

in the county of Erie and State of New York, l

have invented certain new and useful lmprovements in Single-Barrel Firearms of the Breakdown Type, of which the following is a specification. f

The invention relates to improvements in single barrel shot guns, and the principal object is to improve various parts of the mechanism, not alone so as to improve those particular operations controlled by the parts, but also so as to better the entire gun for the purpose of trap shooting and use by experts.

One of the objects is to provide means for locking the barrel of the gun into the sides of the frame upon closing the gun, said means operating to positively draw the barrel and frame into proper seating relationship.

Another object is to provide the gun with means for automatically locking the foreend of the gun to the barrel upon bringing the two parts into proper relationship.

Another object is to provide a new and` Another object is to provide new and improved means for automatically locking the sighting rib to the barrel, together with a ready means for unlocking said barrel and r1 Another object is to provide a top lever which is automatically centralized, and which operates to unlock the barrel from the frame upon moving said top lever in either direction from its normal or central position.

Another object is to provide an adjustable trigger whereby the freach of the gun may be varied without the necessity of shortening the stock.

Other objects will appear hereinafter.

I accomplish all of these results by mechanism shown in the accompanying `drawings consisting of two sheets, and in which:

, Fig. 1 is a fragmentary top plan view of a gun embodying my invention.

Fig. 2 is a fragmentary sectional detail view taken substantially on line B-B, Fig. 4, looking up, and showing the top lever in l its normal or centralized position.

Fig. 3 is a view similar to Fig. 2, but showing the top lever operated.

Fig. 4 is a fragmentary sectional view taken substantially inline A ew-sA, Fig. 1.

.- the frame and barrel,

Fig. 5 is a fragmentary detail view with parts broken away to show clearly the means for drawing the barrel andframe into lock# ed relation, and also showing the compensating bolt for taking up wear in the hinge.

Fig. 6 shows in a fragmentary sectional detail, the mechanism for maintaining the fore end in proper relationship with the barrel.

Fig. 7 is a similar view showing the device for automatically locking the fore end to the barrel.

Fig. 8 is a sectional detail view of the sighting rib and its locking and releasing means.

Fig. 9 is a fragmentary sectional detail view 4of the sighting rib locking mechanism, on line B-B, Fig. 10.

Fig. 10 is a fragmentary side elevation of the sighting rib locking mechanism.

Fig. 11 is a fragmentary sectional detail view of the sighting rib locking mechanism taken substantially on line A-A, Fig 10.

'Like reference characters refer to like parts throughout the several views.

Referring more particularly to the drawings, 1 represents the frame, 2 the stock, and 3 and 4 the front and rear portions of the barrel of a single barrel shot gun. The two portions 3 and 4 of the barrel are provided with registering screw threads so that if either portion Ais injured, the same may be replaced by a new part without the necessity of replacing the entire barrel. The rear end of the rear portion 4 of the barrel is provided with two rearwardly extending anges 5, and each of the fianges 5 is provided with a locking seat 6 and with a. downwardly facing locking tooth or cam element 7. The frame is provided with arecess 8 on each'side for the reception of the corresponding ange 5, the border of each of said recesses being provided with a cam face 9 for co-operation with the tooth 7 of the respective flange. It will therefore be seen that upon closing the gun, the cam tooth 7 willcontact with the cam surface 9 to draw the frame and barrel into close relationship with each other. This mechanism is clearly illustrated in Fig. 5 which also shows a compensating bolt of the type described in my Patent 1,312,170. It may be noted that' this compensating bolt (designated by the numeral 10) automatically takes up any slack which may occur between l slots inthe .e

lat'26 and: at its the@ top 'iev n either direction from,

y g1g .actsas auxiliary torsprin l2 onlreeplng the topleverrentralinedg i y y 2Q represents thev hammer Whieh; kis piv' otefd at I l; to the; trigger plate 21e secured to the @fra-inge i being `front end is provided with a Lfinger 27 overlying Vthe rear end of the cooking lever29. A pin 30 on the lever 29 isoperated upon by a springr 31 to keep the cocking lever as far forward as possible. A 'lug32 formed on the rear portion of the fore end ofthe gun normally presses the lever 29 under'the 4front finger 27 of the cooking member 25. 'The operation of setting the hammer in cocked position is accomplished by the breaking of the gun, when the cock- .ing lever lifts up on finger 27 and the member 25 is moved about its pivot until the hammer has been elevated suiiiciently to permit 4the shoulder 33 oi the trigger 34 to drop in back of the bent 35 of the hammer. The trigger 34 is constantly under tension of spring 36 and is provided on its under -side `with a dove-tail groove `37 in which .of reach, the finger piece may vbe movedfto ythe desired position and then securely fastened :in :such position.

`'.'llliefore'endeliof ,thegun has the nsual spring-pressed pin effliseaeted against@ lng 5 {Stantlyf undef tension; from; e spring 12 l which. springinrges the saidpilate @l1 toward. i the viront of. the l gun and into@ contact with the lockingseats Gofi the tlangesiifthe gun Y be closedfllatellisformedwithanaperve;tuifegl having two= abutment shoulders 14.-

' A top lever; 15 is secured to @a bolt ori pivot 16 having ay bearing in the topk of :the framek Eof the remand thisholt'l@ has-secured to# Iits .lower end and protruding into said apern ture 13,11. double face kcam member :17, have ing ;ca1n faces or; elements 18; for contactingg,T i g i with: either: .of the shoulders le# accordingtnj f v E the;k direction' in Whieh :the g top i lever 1 is ll thus beseen that by; turning s norfr l ,l y he locking; plate ll will bet ,WtiKl-ra@Wn @from locking; vposition to the pof sitioni showninv Fig.; 3 sgothat the igun may 3 `be openedlyjanditwill be apparent that the. may. be: es;y readily; operated by a leit Ehesdedmfwe brershfhanfledne Agfspnn e, pvot gprni passing@ thrnugh: e eeeefftheeeekine membeff and is provided with L notch 213 ;in' itsl rear f i with; Ll

erige intowhiehmoteh. isf seated@ the frontend? ,ofapushe "rodQZhavingabearingats i instantly ELireel 150; f ,drive isafiid; f v khammer by e` SprngQe.; The; cooking; in'

` ,f pieni-edi with@trigger. plate;

insonne f il; represents eloclring platewhichgisieom g of; the :barrel ffor orcingthe 'fore enfdf j Q rearwardly, and inv adlition, the following 2 l desiring means is provided i3 represents; a I f n lug formed on: the under side of vthe barrel' f and having` a notch -foinfiedl therein. "l5 7G i is; a locking :belt having 5a@ bearing in Ithe front. portionfof the tore gend 40; kand pressed pinfl dei;

fefwasimovement @flashnet `Theeinen 'vement ofthe z e l l iaoit cams against thelue en thebjarrelf en niet the saisi v h d reari rd :uniti l it 'is' breil{ht K the 'loch yl arrel in any :et seul :flanges ecrire; ro l spondingwith the undercut pillars, pins are seated in said flanges so as to come into register with the undercut portions of the pillars and draiv'the rib down to its seat. A lug 56 at the rear end ot the rib is adapted to fit into a seat formed in the rear portion of the barrel of the gun, and a pin 57 at the `front en@ of the rib is adapted to seat itself against a` beveled portion of a pillar so as to force said lug home in its seat. In the iorcmost pillar is provided a pin 58 which is 'Forced laterally ot the barrel by a spring 59. An aperture 60 is formed in the adjacent Hangeof the sighting' rib, and when the rib is pressed home. the pin 53 is forced out by spring 59 into the aperture G0 securelyv locking` the rib to the liarrel.

This construction of the rib, permits the same to move longitudinally with the barrel as the latter expands when it becomes heated.

lt is desired to call attention to my `Patents 980,l 74f and 1,160,157 of which some of the parts herein described are improvements, but it will be found that the present cmbodiment is more practical in many respects.

Thile l consider the described mechanism as the most desirable embodiment of my invention, it is to be understood that gara-rions other embodiments could be made invention, and I do not limit myself to the one form shown, nor to anything less than the whole of my invention as described in the foregoing description and as hereinafter set forth in the claims and limited only by the prior art.

And now having described my invention, what I claim as new and desire to secure by Letters Patent is:

l. In a firearm, the combination of a barrel, a plurality oflpillars formed on said barrel and having under-cut edges, a sighting rib provided with flanges adapted to embrace said pillars, and pins ixedly secured in said flanges and adapted to co-act with the under-cut edges of said pillars for seating said rib on said pillars.

2. rThe combination with the barrel of a firearm, having a seat formed therein, of a detachable sighting rib having one end formed to be seated in said seat, and a cam contact between the other end of said rib and said barrel for forcing the first mentioned end of said rib into said seat.

3. The combination with the barrel of a firearm, of a plurality of pillars thereon having undercut faces, a pillar having an inclined cam face, a sighting rib formed with a plurality of pairs of oppositely disposed depending between the flanges of each of a plurality of said pairs of anges and each such pin cooperative with the undercut face of a respective one of said plurality of pillars, and

a pin secured between the flanges of one of said pairs of flanges and co-operative with said inclined cam face for the purpose specified. f

In witness whereof, I have subscribed my name this 23rd day of August, 1919.

EMIL F. FLUES.

Witnesses:

LOUISE G. SPARKS, W. A. SPARKS.

flanges, a pin fiXedly supported 30 

